How often should Class 4 line locations not associated with Highway and RR crossings be inspected?

The frequency of inspections for Class 4 line locations that are not related to Highway and Railroad crossings is mandated to ensure the ongoing integrity and safety of the pipeline system. The chosen option indicates that these inspections should occur every 4.5 months but also must total at least four times within a calendar year. This frequency balances the need for regular surveillance to detect any potential issues with the practicalities of maintaining the inspections over time.

Completing inspections at this interval helps identify any environmental or structural changes that could affect the integrity of the pipeline. The requirement of at least four inspections per year ensures that regardless of any timing variances, the pipeline is regularly monitored, thus minimizing risk. Such stringent inspection intervals are crucial because they align with best practices in pipeline safety management, enhancing the reliability and assessment of Class 4 lines, which may be more vulnerable to issues due to their characteristics and the environments they traverse.